KSP: why does TrackIR crash the first time, run the second time

I start TrackIR 4.0 software, to control a TrackIR 5 camera (KSP doesn't support TrackIR 5 software yet). Then I start KSP and load a game. When the spaceport appears, headtracking is inoperative nine times out of ten. When I alt-tab to TrackIR, it has crashed (grayed-out windows, "TrackIR.exe has stopped working… details… APPCRASH in Stackhash_0a9e") . So I quit KSP, restart TrackIR, restart KSP, and then all is well (nine times out of nine).

How can I make TrackIR work the first time?
(Should I buy a pre-5 camera from someone on ebay?)

KSP 1.0. Clean optical environment: other than teensy dots from eyeglasses reflection, the camera isn't confused about which blobs are the tracking markers. The TrackIR camera driver is 2.50.0.0, which is up to date.

Edit: TrackIR loosely falls under the topic "game-specific hardware." Certainly it is marketed and used primarily as a game controller, even if it isn't specific to KSP. So if this question is re-opened, I'll answer it as: either update the source code of KerbTrack, or buy a pre-5 TrackIR camera.